Milling machine



May' I2, F KQCH MILLING MACHINE Filed Dec. 21, 1959 2 Sheets-Sheet 1 INVENTOR FP50 1?/C`K KOC/r 'ATTO NEY May I2, 1942.

F. KOCH MILLING MACHINE Filed Dec. 2l, 1.959

l NVENTOR FPEOEP/CK /fC/f ATTO E 2 sheets-sheet 2 mgm.

Patented May 12, 1942 UNITED STATES PMF-ENT OFFICE j MILLING MAOHIN E v Frederick Koch, Sparta, N. J., assignor to Associated Patentees, Inc., Ampere, N. vJ., a corporation of New Jersey Application December 21, 1939, Serial No. 310,323

The invention disclosed herein relates to milling machines and is a continuation in part of patent application, Ser. No. 165,033 led September 22, 1937, Patent 2,202,210, dated May 28, 1940.

lapping thrust rings I8, I 9, screwed on the externally threaded portion 2li, of the bearing sleeve and designed to engage the opposed thrust shoulders I6, I1. These rings are preferably provided with some means for enabling ready ad- The Objects of the invention are to provide 5 justment of the same, such as the notches or practical and satisfactory means foi` ,effecting seats 2 I, for a spanner wrench or other actuating longitudinal, horizontal adjustments of the cuttOOl- The adjustable thrust rings I8, i9, are ter spindle and particularly to enable immedi- Shown marked with graduations 22, registering ate, quick adjustments and automatic locking of with index markings 23, for assisting in accurate the spindle in adjusted relation. l adjustment of the parts- The objects mentioned and other desirable ob- By loosening one thrust ring to a predeterjects are attained by the novel features of conmilled eXtent Such aS may be indicated on the struction, combinations and relations of parts scale on that ring and then tightening the other hereinafter described, illustrated in the accomring, the bearing Sleeve and the entire Spindle -panying drawings and broadly Covered in the l assembly maybe accurately shifted a desired exclaim. tent and secured in such shifted relation. If

The drawings illustrate two of the present desired, one or more set screws such as indicated commercial embodiments of the invention,l but at 24, may be provided fOr locking the bearing structure may be changed as regards this dissleeve and parts carried thereby in adjusted posiclosure, all within the true intent and scope of tion. 1 the invention as defined in the claim, The second illustrated form of the invention,

Fig. 1 is a broken part sectional view illus- Figs. 3 and 4, differs from the iirst, primarily in trating the head portion of a milling machine that a Single SCIBW ring 25, effects adjustment 0f having the invention incorporated therein. the bearing sleeve in both directions and further Fig.- 2 is a broken sectional View asv on sub- 25 in that said adjusting ring is rotated by a spiral stantially the plane of line 2-2 of Fig. 1. pinion 26, engaging spiral teeth 21, cut in the ex- Fig. 3 is a broken part sectional and part terior of the ring, said pinion being carried by a elevational view of a modified form-of the in- Shaft 28, jcurnalled ill all inclined bearing 29, O11 vention. Y the side of the head and operated by a hand Fig. 4 is an enlarged broken sectional view as 30 crank 30. This shaft is shown as carrying agradon substantially the plane of line 4 4 of Fig. 3. uated scale 3l, registering with an indeX 32.

In the several views, the cutter spindle is des- The bearing Sleeve iS ShOWrl as held against ignated 5, and is shown journalled in frletionless rotation by a sorewee, engaging in a key groove bearings, such as taper roll bearings at 6, 1, 34, Cut in the sleeveseated in relatively spaced relation in the oppo- The helical or worm gearing operating means site ends of a bearing sleeve 8, longitudinally enables quick and accurate adjustment of the shiftable in a bore 9, in the head portion I0 of screw ring and leaves the latter locked in the pothe machine. sition of adjustment. The single ring takes up The spindle head I0 is shown mounted for less room than the two rings and hence requires A vertical adjustment at I I, on the upper stationless open space at the center of the bearing sleeve ary head portion I2, of the machine. A hand passage and permits closer spacing of the opposed wheel is indicated at I3, for effecting the verthrust shoulders at I6, I1. tical adjustments of the spindle head and means The opening I5 extending transversely in may be provided for clamping this head in pou through the side of the spindle head, to provide sitions of vertical adjustment, such as the clamp- 4D said thrustshoulders, may be closed by a removing bolts at I4. able cover plate, such as indicated at 38 and this The intermediate portion of the passage 9, in plate as shown in Fig. 3 may carry the bearing 29 which the bearing sleeve is mounted is opened for the spindle adjusting Shaft 23- up as indicated at I5, to provide opposed solid r In both constructions the ends of the bearabutment shoulders I6, I1, for coaction with the "o ing sleeve may be closed by suitable seals at 35, screw mechanism for effecting longitudinal adfor excluding cuttings and protecting the bearjustments of the spindle. ings from cutting oils and the like.

In the rst illustrated form of the invention, The inclination of the vadjusting shaft 28, away the screw mechanism comprises a pair of over- 5, from the bearing sleeve passage provides necessary space at the outer end of said shaft for free operation of the hand crank. The latter may be of the readily removable type, so that it may be taken off after adjustments are effected to prevent any accidental shifting of the cutter spindle. The outboard end of the spindle may be supported in a needle bearing, such as indicated at 36, carried by the overarm support 31.

What is claimed is:

In a milling machine, the combination of ay spindle head having a bearing sleeve passage extending therethrough and a transverse opening through one side of the head of larger diameter than said passage and extending across an intermediate portion of said passage between opposite ends of the same to provide integral thrust abutment shoulders about said` passage, opposed to each other and spaced a distance apart equal to the width of said opening, an internally threaded screw ring of greater diameter than said passage and having external gear teeth on the periphery of the same, said screw ring being insertible through said side of the head into said transverse opening between said opposed thrust abutment shoulders, a bearing sleeve longitudinally shiftable in said passage and having external screw threads engaged by the internal threads of said screw ring, a spindle journalled in said bearing sleeve and shiftable longitudinally therewith, a cover plate over said opening at the side of the head, a bearing carried by and extending through said cover plate, an adjusting shaft journalled in said`bearing, means at the outer end of said shaft for rotating the same and a pinion on the nnerend'of said shaft in engagement with said gear teeth on the periphery of said screw ring.

FREDERICK KOCH. 

